21153718720

素因数分解:

$2^6\times 5^1\times {\mathrm{6203}}^1\times {\mathrm{10657}}^1$

素因数の和:16877

約数の個数: 56

約数和(自身を含む): 50385140784

約数和(自身を除く): 29231422064

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 6203, 10657, 12406, 21314, 24812, 31015, 42628, 49624, 53285, 62030, 85256, 99248, 106570, 124060, 170512, 198496, 213140, 248120, 341024, 396992, 426280, 496240, 682048, 852560, 992480, 1705120, 1984960, 3410240, 66105371, 132210742, 264421484, 330526855, 528842968, 661053710, 1057685936, 1322107420, 2115371872, 2644214840, 4230743744, 5288429680, 10576859360, 21153718720]

約数ペア:

[(1, 21153718720), (2, 10576859360), (4, 5288429680), (5, 4230743744), (8, 2644214840), (10, 2115371872), (16, 1322107420), (20, 1057685936), (32, 661053710), (40, 528842968), (64, 330526855), (80, 264421484), (160, 132210742), (320, 66105371), (6203, 3410240), (10657, 1984960), (12406, 1705120), (21314, 992480), (24812, 852560), (31015, 682048), (42628, 496240), (49624, 426280), (53285, 396992), (62030, 341024), (85256, 248120), (99248, 213140), (106570, 198496), (124060, 170512)]